5W-30 Synthetic in a 2011 F-250 w/ 6.2L gas engine?

[Shel_B]

The Delo 400 XSP 5W/40 that @userfriendly used is an SN+ rated oil so perfectly fine in a gasoline engine. Also, the 6.2 Ford is a port injected engine so not nearly as susceptible to the LSPI events, as referenced in the video, as a TGDI (like the Audi that the piston in the picture/video came with).

Thanks for the clarification.

 

[MVAR]

I bought him a set of NGK Ruthenium plugs that have pointed electrodes on both the positive and negative side. Some say those are better because the wasted spark is reverse polarity and fires backwards.
New coils are going on next week. The truck sure looks better with the 295/65R20 Toyo CTs that were on 180x8 wheels hiding in the crawl space. We found some 20x10 170s on sale for half price.

No idea on the NGK's. I'm just running Motorcraft. My friend, who just sold his fleet shop & retired last week, has had excellent results with them on several 6.2's that he serviced in a few fleets. I took the "if it aint broke don't fix it" mentality & just stuck with what worked on several trucks going through his shop.

I do run NGK's in my Bronco & they worked out really well. They'll likely do great in your sons SD as well.

 

[ka9mnx]

Rare Earth metal spark plugs DO NOT work in waste spark systems (ask me how I know). Use only copper or dual platinum copper plugs. Iridium plugs lasted only six months in my waste spark ignition vehicles.

 

[userfriendly]

Rare Earth metal spark plugs DO NOT work in waste spark systems (ask me how I know). Use only copper or dual platinum copper plugs. Iridium plugs lasted only six months in my waste spark ignition vehicles.

Now you tell me.
We just took what the parts person gave us at Lordco.

 

[Lawnman23]

Rare Earth metal spark plugs DO NOT work in waste spark systems (ask me how I know). Use only copper or dual platinum copper plugs. Iridium plugs lasted only six months in my waste spark ignition vehicles.

What’s the reason for that?

 

[ka9mnx]

What’s the reason for that?

I have no clue but when I pulled the plugs for inspection (on V6) one bank looked perfect and the other bank the center electrode was completely gone (two different vehicles). I, also, don't know but I think the waste spark bank was the culprit. When Ford came out with the 3.0l engine they used one type of plug on one bank and another type on the other bank. By the time my engine was built they did away with that requirement.

 

[ka9mnx]

Now you tell me.